<template>
  <div :class="className" :style="{height:height,width:width}" />
</template>

<script>
import echarts from 'echarts'
require('echarts/theme/macarons') // echarts theme
import resize from './mixins/resize'

const animationDuration = 6000

export default {
  mixins: [resize],
  props: {
    className: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '300px'
    },
    list: {
      type: Array,
      default() {
        return []
      }
    }
  },
  data() {
    return {
      chart: null
    }
  },
  watch: {
    list() {
      if (this.list.length > 0) {
        this.$nextTick(() => {
          this.initChart()
        })
      }
    }
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$el, 'macarons')
      const key = []
      const val = []
      this.list.map(item => key.push(item.name) && val.push(item.value))
      this.chart.setOption({
        tooltip: {
          trigger: 'axis',
          axisPointer: { // 坐标轴指示器，坐标轴触发有效
            type: 'shadow' // 默认为直线，可选为：'line' | 'shadow'
          }
        },
        grid: {
          left: '20px',
          top: '20px',
          bottom: '20px',
          containLabel: true
        },
        xAxis: [{
          type: 'category',
          data: key,
          axisTick: {
            alignWithLabel: true
          },
          axisLabel: {
            interval: 0,
            rotate: 40
          }
        }],
        yAxis: [{
          type: 'value',
          axisTick: {
            show: false
          }
        }],
        series: [{
          name: 'IP归属',
          type: 'bar',
          stack: 'vistors',
          barWidth: '60%',
          data: val,
          animationDuration
        }]
      })
    }
  }
}
</script>
